M. Prakash
Prof. Sanjay Singh
Abstract
Day by day advancement of technology especially in mechanical manufacturing sector allows technocrats to use CNC machines extensively especially in automotive and aerospace industries. High speed machines used for cutting, boring, drilling, machining etc. needs the work piece to be cooled simultaneously as in the process of machining, high amount of heat is generated which is detrimental to the part or component manufactured for high precision and accuracy. The role of coolant is not only to cool the work piece and tool but also to remove chips and burrs formed effectively so that the waste materials should not come in the way of tool and work piece and damage the finished product. The position of coolant nozzle plays a vital role in producing a finished product with higher accuracies as the manufacturing process is continuous and simultaneously several operations are performed in the same work piece by changing the tools and their orientation. Cases of several rejections of parts and components by quality division in an industry revealed positioning of coolant as also one of the potential reason for producing components with dimensions over or under leading to additional machining process which consumes considerable time which is absolutely undesirable. In this paper, management tool 8D methodology is used to identify the problem of rejections of push rods manufactured for tractor brakes and further correct it technologically by re-positioning of the coolant nozzle.
Keywords- 8D; Coolant; Burr; Push Rod; Pocket Depth, Chips